If you have a theme in a ZIP file on your computer, you can upload it to the Themes page in the admin.
Before you upload, make sure that your theme files are compressed into a single ZIP file.
Steps
- From your Shopify admin, go to Online Store > Themes.
- In the Theme library section, click Upload theme.
- From the Upload theme window, click Choose File to select the ZIP file that you want to upload.
- Click Upload. The theme will be added to the Themes page of your admin.